The VoltageC return value increases as the battery decreases because
the ADC is reading a fixed value (the Bandgap ref) and comparing it
to the ADC Reference which is the battery voltage itself. So as the
ADCref (battery) drops, the value of the fixed BGref appears to increase.
Did that make sense, semantically at least?
MS
[EMAIL PROTECTED] wrote:
Rahul,
Thanks, I have used VOltageC. But as I have read, I think that VoltageM
returns the value as a direct reference, of mv, VoltageC does not. Was just
thinking this was a better implementation of obtaining the voltage values. The
current conversion I have for VoltageC returns values that increase as the
battery dies, this is wierd....
Thanks.
Josh
Quoting Rahul Sawant <[EMAIL PROTECTED]>:
Hi
r u using VoltageC from tos/system if not use this as this is the
configuration for VoltageM and it includes voltage.h
if ur using VoltageC then It seems like you dont have the voltage.h file in
tos/platform/mica2 if u dont just download the attached file
Rahul Sawant
On 4/26/06, [EMAIL PROTECTED] <[EMAIL PROTECTED]> wrote:
Hey all,
IM trying to use the VoltageM component with mica2 tinyos-1.1.15, as it
returns the actually voltage in mv. However, when I compile i get these
errors:
C:/tinyos/cygwin/opt/tinyos-1.x/tos/platform/mica2/VoltageM.nc: In
function `Std
Control.start':
C:/tinyos/cygwin/opt/tinyos-1.x/tos/platform/mica2/VoltageM.nc:67:
`TOS_ADC_VOLT
AGE_PORT' undeclared (first use in this function)
C:/tinyos/cygwin/opt/tinyos-1.x/tos/platform/mica2/VoltageM.nc:67: (Each
undecla
red identifier is reported only once
C:/tinyos/cygwin/opt/tinyos-1.x/tos/platform/mica2/VoltageM.nc:67: for
each func
tion it appears in.)
C:/tinyos/cygwin/opt/tinyos-1.x/tos/platform/mica2/VoltageM.nc:68:
`TOSH_ACTUAL_
VOLTAGE_PORT' undeclared (first use in this function)
make: *** [exe0] Error 1
Any ideas??? thanks so much
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